49179-02230 Diesel Engine Turbo Charger 143kw For E320 E320B Excavator

49179-02230 Diesel Engine Turbo Charger 143kw For E320 E320B Excavator

Specifiion

Description

A significant difference between a turbocharged diesel engine and a traditional naturally aspirated gasoline engine is the air entering a diesel engine is compressed before the fuel is injected. This is where the turbocharger is critical to the power output and efficiency of the diesel engine.

It is the job of the turbocharger to compress more air flowing into the engine’s cylinder. When air is compressed the oxygen molecules are packed closer together. This increase in air means that more fuel can be added for the same size naturally aspirated engine. This then generates increased mechanical power and overall efficiency improvement of the combustion process. Therefore, the engine size can be reduced for a turbocharged engine leading to better packaging, weight saving benefits and overall improved fuel economy.

Characteristic

Variable-geometry or variable-nozzle turbochargers use moveable vanes to adjust the air-flow to the turbine, imitating a turbocharger of the optimal size throughout the power curve.The vanes are placed just in front of the turbine wheel like a set of slightly overlapping walls. Their angle is adjusted by an actuator to block or increase air flow to the turbine.[37][38] This variability maintains a comparable exhaust velocity and back pressure throughout the engine's rev range. The result is that the turbocharger improves fuel efficiency without a noticeable level of turbocharger lag. A VGT Turbocharger can also work as an exhaust brake by closing off the exhaust entirely, for example in the RAM HD Pickup Trucks equipped with the Cummins Diesel Engine.

Other Brand of Turbocharger as follow